Microsoft IIS Web Server and ASP.NET Forum

I have an aspx page developed in VWD 2008 Express. This page will be used in the root of a website that connects to a database using a web.config in a sub-folder. There is not currently a web.config in the root. Are there any issues or potential problems I need to be aware of when I place the development web.config file into the root of the live site?

In addition, the sub-folder web.config explicitely states that the defaultLanguage="c#" while the root aspx file was written in VB and there is no declaration in the web.config file. Again, any issues to be concerned with?